/Engine/Source/Runtime/RHI/Public/DynamicRHI.h
Updates a region of a 2D texture from GPU memory provided by the given buffer (may not be implemented on every platform)
virtual void RHIUpdateFromBufferTexture2D ( [FRHICommandListBase](API\Runtime\RHI\FRHICommandListBase) & RHICmdList, FRHITexture2D * Texture, uint32 MipIndex, const struct [FUpdateTextureRegion2D](API\Runtime\RHI\FUpdateTextureRegion2D) & UpdateRegion, uint32 SourcePitch, [FRHIBuffer](API\Runtime\RHI\FRHIBuffer) * Buffer, uint32 BufferOffset )